Grease-cup



EQNoLAN..

GRE/sicura APPLICATION FILED MAR. lvl, 1920.

- vwentoz E. Noam.

GREASE CUP.

APPLfcATIoN msn MAR.1|. |920.

2 SHEETS-SHEET 2.

@noauto/c w1, f/Amm @KM/Mmmm Y coperating unirse stars EDMUND NoLAN, or DETROIT, MICHIGAN.

GREASE-CUP.

Specification of Letters Patent.

Patented Sept. 21, 1920.

Application filed March 11, 1920. Serial No. 364,923.

To all whom t may corcewt:

Be it known that I, EDMUND NOLAN, a citizen of the United States of America, residin at Detroit, in the county of Wayne and tate of Michigan, have invented certain new and useful Improvements in Grease-Cups, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to grease cups and has for one of its objects the provision of a construction which can be readily attached to or detached` from a lubricating connection and in which the pressure upon the grease in the barrel is automatically relieved before releasing the clamping pres, sure upon the lubricating connection. Other objects of the invention residez in the novel arrangements and combinations of parts as more fully hereinafter set forth.

In the drawings:

Figure 1 is a central longitudinal section partly in elevation of a construction embodying my invention;

Fig. 2is a central longitudinal section of one-half theA construction and showing the parts in different positions of adjustment;

Fig. 3 is a central section through the ratchets in separated position;

Fig. 4 is a side elevation of the clamp at right angles to that shown in Fig. 1.

1 is thespindle having the outer and inner threaded ends 2and 3 respectively and the intermediate enlarged cylindrical portion 4, and the axial bore 5 therethrough for the passage of the grease. 6 is the barrel having the outer closed end 7 and the i base 8, the latter being rotatably mounted upon the intermediate portion 4 of the spindle. This intermediate portion is provided with the annular flange 9 forming the lateral face 10 for limiting the outward movement of the barrel relative to the spindle.

The base 8 has the cylindrical flange 11 which is threadedly engaged by the barrel proper 12, the latter having the shoulder 18 which is engageable with the outer end of the-cylindrical flan e movement of the arrel proper with the flange. The cylindrical'flange 11 is of such a length as to retain the plunger 14 when it is desired to remove the barrel proper to ill the same with grease and then replace the barrel proper.

The plunger 14 comprises the cup 15 to limit the engaging.

formed of suitable material, such as leather,

and the disks 16 on opposite sides thereof, these disks being rigidly secured against the cup b means of the flange 17 upon the hub 18. his hub threadedly engages the outer end 2 of the spindle and the cup has frictional engagement withthe wall of the barrel sufficient to rotate the plunger about the threaded end 2 and thereby move the same longitudinally thereof.

19 is a clamp for securing the grease cup to the lubricating connection 20, the latter having the longitudinal passageway 21 connected into by the transverse passageway 22, which latter is adapted to register with the axial bore 5 in the spindle 1. This clamp has the outer end 23 which threadedly engages the inner end 3 of the 'spindle and the transversely apertured en'd 24,v the aperture being polygonal and adapted to engage a correspondingly shaped end of the lubricating Iconnection 20. 25 is a shoulder or pin upon the lubricating connection and engageable clamp to limit the engaging movement of the lubricating connection and grease cup whereby the transverse passageway 22 will 311e alined with the .axial bore 5 in the spin- As thus far described, upon rotation of the barrel 6 to the right or in a clock-wise direction the barrel proper 12, plunger 14, spindle 1, and barrel base 8 rotate as a unit, the inner end 3 of the spindle rotating in the threaded end 23 of the clamp 19 moving inward upon the lubricating connection 20. When the clamping pressure of the inner end 3 of the spindle upon the lubricating connection 2O becomes greater than the friction between the plunger 14 and outer threaded end 2 of the spindle the plunger will be then rotated about the spindle, the latter remaining stationary, and thereby moved outwardly relative thereto to force the grease through the axial bore 5 of the spindle and into the lubricating connection.

For the purpose of sealing the joint between the inner end 3 of the spindle'and the lubricating connection the packing 26 is provided carried in the inner end of the spindle and surrounding the axial bore 5.

For the purpose of relieving the pressure upon the grease in the barrel before releasing the clamping pressure between the inner end 3 of the spindle and the lubricating with the apertured end 24 of the connection 20 the outer and inner ratchets 27 and 28 are provided surrounding the spindle 1 and in substantial alinement with the barrel base 8. The outer' ratchet 27 is lixedly secured to the intermediate portion l of the spindle while the inner ratchet is non-rotatably secured to the threaded portion 23 ot' the clamp, as by means of the pin or key 29 extending through aside wall of the ratchet and engaging in the longitudinal groove 30 in the threaded portion 23. 31 is a coil spring abutting an annular flange 32 upon the threaded portion 23 and the outer end of the ratchet '28 whereby the teeth of the inner ratchet are yieldably maintained in engagement with the teeth of the outer ratchet. rlihese teeth are so arranged as to permit of rotation of the outer ratchet 27 to the right or in a clock-wise direction relative to the inner ratchet 28, but upon rotation of the outer ratchet to the left or in a counter clock-wise direction the teeth will lock.

F or the purpose of disengaging the teeth of the outer and inner ratchets 27 and 28, respectively, the sleeve 33 is provided surrounding the barrel base 8 and lsecured thereto, the inner end of this sleeve being adapted to engage the inner ratchet 28 and move it inwardly relative to the outer ratchet when the pressure upon the grease in the barrel is relieved and the barrel moves inwardly.

To lock the barrel, including the barrel proper 12 and barrel base 8, to the outer ratchet 27 upon rotation of the barrel to the left or in a counter clockwise direction the shoulder members 34C and 35 are provided in concentric relation to the axis of the spindle 1 and extending in opposite directions respectively i'rom the barrel base and outer ratchet. Theseshoulder members as shown in the present instance comprise pins which are provided with inclined ends permitting of rotation of the barrel base relative to the outer ratchet in a clockwise direction.

Assuming the parts to be in secured position as shown in lF ig. 1 in which the barrel proper 12 is loaded with grease and screwed upon its base 8 and the inner end 3 of the spindle 1 is clamped to the lubricating conv By ,turning the barrel proper 12 to the lett or in a counter-clockwise direction the innerratchet 28, which is in engagement with and locked to the outer ratchet 27 by means of the ratchet teeth, causes the spindle 1, the outer and inner ratchets 27 and 28 respectively, the clamp 19 and the lubricating connection 2O to act as one unit thereby eliminating the possibility of the spindle turning in the clamp before the plunger 14 and barrel 6 have rotated relative to the spindle. Thus, during the rst portion ot Y ,atacar the rotation of the barrel to the left or in a counter clockwise direction the plunger will be rotated therewith and moved inwardly upon the spindle thereby relieving the pressure upon the grease in the barrel. Upon continued rotation of the barrel to the left or in a counter clockwise direction the barrel proper 12, the plunger 14e, and the barrel base 8 rotate relative to the spindle causing the barrel, the barrel base and the sleeve 33, secured to the barrel base, to move inwardly toward the lubricating connection due to the fact that the barrel moves inwardly relative tothe spindle upon relieving of the pressure upon the grease in the barrel. 'l` his inward movement causes the sleeve to engage with the inner ratchet 28 and move the same out of engagement with the outer ratchet 2T, as shown in lFig.` 2. The shoulder members 34 and 35 upon the barrel base 8 and outer ratchet 27 loclr, whereby the barrel proper 12, the barrel base 8, the spindle 1 and the outer ratchet 27 operate as a unit, so that continued counter clock-wise rotation of the barrel will move the inner end 3 of the spindle outwardly relative to the clamp 19 thereby releasing the clamping pressure upon the lubricating connection.

lll/hat l claim as my invention is:

1. The combination with a lubricating connection, of a grease cup including the spindle detachably clamped to said connection and means for automatically relieving the pressure upon the grease in said cup prior to detaching said cup including the spindle from said connection.

2. The combination with a lubricating connection, of a grease cup including the spindle detachably nection, and means operated by the rotation of said cup in one direction for automatically relieving the pressure upon the grease in said cup and subsequently unclamping said cup including the spindle from said connection.

3. The combination with a lubricating connection, of a grease cup detachably clamped thereto, means operated by the rotation'of said cup in one direction to clamp said cup to said connection and to subsequently force the grease in said cup into said connection and means operated by the rotation of said cup in the opposite direction to relieve the pressure upon the grease in said cup and to subsequently unclamp said cup from said connection.

l. rllhc combination with a lubricating connection, of a grease cup comprising a spindle engageable with barrel rotatably mounted plunger movable Within said barrel and movable longitudinally of said spindle, said plunger being actuated by said barrel and means actuated by said barrel for clamping on said spindle, a

clamped to said con- H said connection, a

t aaaaeor said spindle to said lubricating connection prior to longitudinal movement of said plun er relative to said spindle.

5. he combination with a lubricating connection, of a'grease cup detachably se-v cured thereto comprising a spindle engage.

lubricating connection, said spindle, barrel,

and plunger forming a unit movable relative to said cla-mp prior to longitudinal movement of said plunger with respect to said spindle upon rotation of said barrel in one direction, means 4for connecting said clamp, spindle and lubricating connection to form a unit upon rotation of said barrel in the opposite direction to provide opposite longitudinal movement of said plunger with respect to said spindle, and means operable upon continued rotation of said barrel in the opposite direction for subsequently unclamping said grease cup.

46. rlhe combination With a lubricating connection, of a grease cup detachably secured thereto, comprising a spindle having an end engageable With said connection, a barrel rotatably mountedon said spindle, a plunger Within said barrel and frictionally engaging the side Wall thereof, said plunger threadedly engaging said spindle, a clamp threadedly engaging said spindle at its connection end and having a portion surrounding said connection, a ratchet non-rotatably secured to said clamp, a coperating ratchet non-rotatably. secured to said spindle, means upon said barrel for longitudinally moving Said first-mentioned ratchet to disengage the samel from said second-mentioned ratchet, and means upon said barrel and last-mentioned ratchet for subsequently locking the former'to the latter upon rotation of the former in one direction.

7. The combination with a lubricating connection having a polygonal end, of a grease cup detachably secured thereto, comprising a spindle having an end engageable with the polygonal end of said connection, a barrel base rotatably mounted onpsaid spindle, a barrel proper upon said base, ay plunger Within said barrel proper and adapted to be actuated thereby, said plunv ger threadedly engaging said spindle, a

clamp having a portion threadedly engaging the connection end of said spindle and a second portion surrounding the polygonal end of said connection, a ratchet non-rotatably secured to said clamp and movable longitudinally thereof, means for yieldably maintaining said ratchet in extended position, a second ratchet non-rotatably secured to said spindle and normallyin engagement with said first-mentioned ratchet, cooperating shoulder members upon said barrel basevand second-mentioned ratchet adapted to lock said barrel base 'to said second-mentioned ratchet upon-rotation of said barrel proper in one? direction, a sleeve surrounding said barrel base and movable longitudinally of said spindle to engage said lirst-mentioned ratchet and disengage the same from said second-mentioned ratchet. v

In testimony whereof l alix my' signature.

EDMUND NOLAN. 

